Punch and guide therefor



1,551,663 A. C. HOUGH.

PUNCH AND GUIDE THEREFOR Filed Aug, 1, 1924 3 Sheets- Sheet 2 I N VENTOR.

r nij I BY WCLQW,

ATTORNEY.

'A. C- HOUGH PUNCH AND GUIDE THEREFOR Filed Aug. 1, 1924 3 Shouts-Shae 5PLEA f INVENTOR.

By W WI 4 a. M!

Patented Sept. 1, 1925;

PATENT o AZIBD c1 nooemormunsvrnrn, Wisconsin; ASSIGNORYTO- ROUGH SHADEcom roaATIoN, or JANESVILLE; Wisconsin, A CORPORATION" OF GONNEGTICUTiBUNCH AND GUIDE THEREFOR.

Application. filedi Arug ust 1, 1924. Serial No. 728,628.

tools or implements for u-nching holes. in

metal strips, such as the orwardly-projectribs of'steel windo a sashes,and in general consists of a slotted guide provided with means forattaching the same toxthe work, and a 'togglejoint punch which isadapted toChave. its jaws inserted inthe' guide, after the latter hasbeenattached to the work, and then to be operated by means of ahand-wheel to punch the hole'in said work, both said guide and punch.beingof,

special and peculiar construction, and as hereinafter set forth indetail.

The primary object of my invention is to provide what may be termed aset of implemen for expeditiously and economically punching holes by"hand "in strips of metal, the same being especially adapted for punchingholes in the forwardly-pr'ojecting parts or ribs of steel window sashesin order,

that brackets for shades may be readily fastened to such sashes. V

This punch and guide are strong and durable, comparatively simple bothin construction and ope-ration convenient to use, and

require little or no skill on: the part person using the same.

Another object is to produce a punch of the guide which can be easilyand quickly attached to and detached from the Work, and

ing or .cracking the' glass offfthe window is thereby removed,

A furtherobject is tojinsure accuracy in perforatingthe holes, not onlyas to the distance apart of the holes hut als q as to their distance infrom the front edgeof the work.

Still another objectis to: produce a punch,

of the character'described above, with, which a gradual but positivepressure is. brought to bear on the aws'of the punchby turning ahand-wheel. v a

When the punch and guide-are used for perforating steel window sashribsfifor: the purpose of having attached thereto shade brackets, saidpunch and guide are disposed horizontally, because it isthe verticalribs of such sashes that are perforatedibnt the implements may be usedandv operated ina vertical posit on, or 1n a diagonal position,

in connection with other kinds of work.

Other objects andadvantages, will appear in the course? of the followingdescription.

I attain the objects and secure the; adya-m tages of my invention by themeans illiustrated' in the, accompanying drawings, in Wll1(3h,

Figure 1 1s a central, longitudinal section through a guide which:embodies a practical form of that elementv of my invention, looking downFig. 2, a front elevation of; said guide; Fig.1 3,, a top. plan of apunch which embodies a practical form of: that element of saidinvention; Fig, ban elevation of the jaw end of said punch, the handayheel being omitted, and a portion of the'handle being broken off;Fig. a central, longitudinalseotion through said punch, looking down,said hand-wheel being again omitted,

and a portion of said handle being, again broken off, and, Fig. ,6, alefthand side elevation of one of the punch members.

Similar reference characters, des gnate similar parts throughout theseveral views.

.In the first three views infull lines, and in Fig, 5,- in broken lines,is, represented, at l, a fragmentary portion of, the

rib of the right-hand side of a-steel lwindow sash, and the punch andguide will' be de- I scribed in their applicationthereto and operationthereon, but as herei lbefore explained, the range of application andoperation is by no meanslimited to work of this character.

Referring first more particularly to Figs. 1 and 2, it will beseen that,the guide comprises a, plate which has on the front" side adjacentto'the longitudinal" edges thereof fl ge 3:3 and inte mediate, Ltangular block or boss aprovided with forwardly-extending ears or lugs55; that said plate has therein upper and under slots 6, and anintermediate slot 7 which extends clear through said plate from front toback; and that in the back side of the plate is a groove 8. Other partsand members of the guide consist of arms 9 and 10, each of which ispivotally connected at 11 with the lugs 5, and is provided with agripping post 12, and a screw 13 tapped into and through the arm 10, andprovided with a collar 14 and a washer 15, the head of said screw havinga handle 16.

The slot 7 is in the longitudinal center of the plate 2 and parallelwith the slots 6, and extends through the boss 4. The inner faces of thelugs 5 are flush with the upper and under, longitudinal sides of theslot 7. The under side of the upper flange 3 and the upper side of theboss 4 are flush with the longitudinal sides of the upper slot 6, andthe upper side of the lower flange 3 and the under side of said boss areflush with the longitudinal sides of the lower slot 6. The groove 8 isin the transverse center of the back side of the plate 2, atright-angles to the slots 6 and 7, and its continuit is interrupted bysaid slots. The front edge portion of the rib 1 is received in thegroove 8. The pivots 11 are on opposite sides of and equidistant fromthe transverse, vertical plane in which the groove 8 is located.

The arms 9 and 10 project through the slot 7 behind the plate 2, and thegripping posts 12 are set in adjacent sides of and project from saidarms in position to en gage the rib 1. The arms 9 and 10 also projectforwardly beyond the lugs 5, and the front end of the arm 9 isbifurcated at 17 to receive a part 18 of the screw 13. which part isunthreaded and of less diameter than the threaded portion of said screw.The collar 14 is secured to the outer end of the part 18 outside of thebifurcated terminal 17 while the washer 15 is mounted on said partinside of said terminal. It will now be seen that, when the screw 13 isrotated in one direction, the forward terminals of the arms 9 and 10 areforced apart and the rear terminals of said arms with the gripping posts12 are forced to ward each other, and that, when said screw is rotatedin the opposite direction. said arms are actuated toward each other attheir front ends and away from each other at their rear ends.

To attach the guide to the rib 1. place the plate 2 a ainst the forwardedge of said rib, with such edge in the groove 8. while the grippingposts 12 are widely separated. and rotate the screw 13 in the directionto cause said posts to approach each other and the proper height on saidrib to enable the holes subsequently to be punched therein to be in thedesired positions. To detach the guide from the rib 1, simply rotate thescrew 13 in the opposite direction far enough to cause the grippingposts 12 to be carried out of engagement with said rib, and withdrawsaid guide.

When the guide is attached to the rib 1, the positions of the holes tobe punched are in the horizontal planes of the longitudinal centers ofthe slots 6, as will presently be more clearly apparent.

The punch, as illustrated in Figs. 3, 4, and 5, will next be described.

This punch comprises a head 19, an externally screw-threaded spindle 20,an internally screw-threaded sleeve 21 mounted on the screw-threadedpart of said spindle, two arms 22 pivotally connected adjacent to therrear ends, at 2323, with said head, two pairs of links 24 each havingone terminal pivotally connected at 25 with said sleeve and the otherterminal pivotally connected at 26 with one of said arms at the forwardend thereof, a punch pin 27, a stop 28, and a punch bushing 29. Thelinks 24 in each pair are on opposite sides of said sleeve 21 and thearms 22.

The head 19 has a slot 30 therein which opens through opposite sides andthe rear end of said head, and inner projecting parts on the adjacentedges of the arms 22 are received in said slot and connected with saidhead by the pivots 23. At the rear end of the spindle 20 is an extension31, and said spindle has thereon forward of such extension a flange 49.The extension 31 passes through a horizontal opening in the center ofthe head 19, and on the rear terminal of said extension, within the slot30, is a washer 32 and a nut 33. The part of the head 19 through whichthe extension 31 passes is between the flange 49 and the aforesaidwasher and nut. and the construction and arrange ment of parts are suchthat said extension can rotate freely but can not move independentlvendwise in said head. For greater securitv the nut 33 is pinned at 34 tothe extension 31. The forward terminal, of the spindle 20 is slabbedoff. as represented at 35 in Fig. 5. to form an angular or stem part forthe reception of the hub 36 of a hand-wheel 37. a set-nut 38 beingprovided to prevent said hub from being withdrawn from said stem.

Extending outwardly from the rear terminal of one of the arms 22 is apost 39. and mounted on this post is a handle 40. The outer terminal ofthe post 39 is screwthreaded to receive a nut 41, by means of which thehandle 40 is secured in place on said post. said nut being in saidhandle which is made hollow to receive it.

The pivotal. connections betweenthe parts nuances integral thatis'equipped with the handle Thepunch pin 27 is securedito the jaw 42.The stop 28 is secured to the aw by means 'of a screw 4. One terminal ofthe pin 27 1s-rece1ved in a recess in the inner face of the jaw 42, anda screw 45 is tapped into'one side of said jaw in position to engagesuch terminal and thus secure said pin in place. A passage 46 isforniedin the aw 43, said passage opening at the inner end through'theinner face of said jaw, and at the outer end through the outer edge ofsaid jaw. The inner terminal portion of the passage 46 is enlarged toreceive the bushing 29,.said bushing being held in place in said passageby means of a screw 47 that is tapped into one side of the 43and engagessaid bushing. Both the pin 27 and the bushing 29 are made of hardenedsteel. The bushing 29 is in position to receive the out-er terminal ofthe pin 27 when the jaws 42'and 43 are closed to their fullest extent,as clearly shown in Fig. 5. The closing movement of the jaws 42 and 43is limited by the stop 28 which is located between the inner faces ofsaid jaws below the punch pin and bushing. The stop 28 is secured inthis position to the inner face ofthe jaw 43 by means of the screw 44which passes through said stop and is tapped into said jaw. Rising fromthe top. of the stop 28 are two lingers 48. The fingers 48 are separatedbya space sufficiently wide to permit of the passage of the pin 27,. andare spaced apart from the bushing 29 a suliicient distance to enablethelrib 1, or other work, to be received in the space between theexposed end of said bushing and said fingers. p

Both the jaws 42 and 43 are of the same thickness, and they are in thesame plane,

and such thickness is approximately equal to the width of either of theslots 6, consequently' such jaws can be' readily slipped into and out ofeither of said slots.

taken that the front edge of the rib 1 is receivedbetween the jaw 43 andthe fingers48 and said jaws are pushed into said slotuntil the rear edgeof the stop 28 bears against. the front edge of sa d l'lll' Bythisnieans through the passage 46 When the jaws are slipped into eitherslot 6, care is bushing-see: Fig. 5.

facilitate the withdrawal of the punch pin 27"after'the hole has beenmade in the rib l, as will hereinafter be more fully explained.

The flanges 3 and boss serve abutments for the jaws 42 and 43, when thelatter are in either slot 6, and with the gitudinal sides of such slotproperly st 0..

- v o a o v and guide said jaws during the pun hing operation. The slots6 necessarily must be of sufficient length to enable the ewe 42 and 43'to be opened and closed therein.

When the spindle is rotated in one direction. the sleeve2l is actuatedrearwardly and carries with it the links 24, with the result that saidlinks cause the forward ends of the arms 22 to' be drawn toward eachother, said arr is swinging on the pivots 23 in the head 19, and thejaws 42 and 43 to be more widely separated. This open position of thejaws 42 and 43' will be clearly seen upon referring to Figs. 3 and 4.Upon rotating the spindle 20 in the opposite direction, the sleeve 21 isactuated forwardly and carries with it the linlrs24, with the resultthat the forward terminals of the arms 23 are forced outwardly and thejaws 42 and 43 are forced inwardly. Powerful means are, thus providedfor causing the jaws 42 and 43 to be closed gradually and with greatforce, force sufficient, in fact, to drive the punch pin 27 through anywork which is between said jaws, and the slow movement insures aclean-cut hole. The punchlngs are pushed end thereof.

Although the operation of this punch and and out of the outer 10o guidewillbe quite well understood from the i's'raised and said jaws areinserted in one or v the other of the slots 6 in such a way as toreceive thefront edge of the rib 1 in the space between the jaw 43 andthe fingers 48, and said punch is pushed rearwardly until the back edgeof the stop 28 comes to rest against said edge of said rib. With thepunch held in this position, by means of the handle 40, the hand-wheel37 is retated in the direction to causethe jaws 42 and 4:3 to be closed.As the jaws continue to close the punch pin 27 passes between thefingers 48 into contact with the rib 1, causes the exposed end of thebushing 29 to bear hard against one side of said rib; and forces its waythrough said rib from the other side until itemergesfroni the rib andenters the Next the hand-wheel 37 is rotated in the opposite directionto cause the jaws 42 and 43 to open. when the pin 27 causes the fingers48 to be f rced foregoing, I will next briefly explain such n at againstthe contiguous side of the rib 1, and said pin is slowly withdrawn fromthe rib, the opening movement continuing until the pin is entirely clearof the rib, or until said jaws are approximately wide open asillustrated in Figs. 3 and at.

The jaws 4-2 and are now withdrawn from the slot 6 in which they werefirst inserted and inserted in the other slot 6, when the operationsjust described are repeated to punch the second hole in the rib 1. Afterthe second hole is punched and the jaws are again opened, the punch iswithdrawn from the rib and guide. and the latter is unfastened andremoved from the rib.

The punch may be disposer. so as to enable the handle 4-0 to be graspedin the left hand instead of the right. of desired, for vertical work.and said handle may be grasped in either hand when the punch is used inconnection with horizontal or oblique work.

During the punching operation the jaws are held so securely in the slot6 in which they are inserted. and the stop 28 so adequately positionsthe rear end of the punch relative to the work or rib 1, that there isno rocking, tilting, or unnecessary sideways movement of th punch,whereby the holes might be improperly located. provided the punch. afterbeing properly placed in position. be held steady by the hand, and thereis no diflioulty in so holding it owing to the construction and balanceot the implements.

ittention is called to the fact that the stop 23 performs the followingthree functions, or serves three purposes. it limits the closing of thejaws 4-2 and 413, it positions the punch relative to the work laterally,and it bears against the work to enable the punch pin 27 to be withdrawnfrom the work.

It is conceivable that the plate 2 might have therein more or less thantwo of the slots 6. and that such plate might be provided withadditional gripping parts and members.

In addition to the modifications or changes of which special mention hashereinbefore been made. other modifications or changes in the shape.size, construction. and arrange ment ot the parts and members of thispunch and guide may be made without departing from the spirit 0t myinvention or exceec. ing the score of what is claimed.

hat I claim as my invention. and desire to secure by Letters Patent, is

1. A guide. for a punch which cooperates with but is separate from saidguide. comprising a plate grooved in one direction to receive the work.and slotted in another direction to receive the front ends of the jawsof the punch, and provided with workengaging means, whereby said plate1s attached to said work.

2. A guide, for a punch, comprising a plate grooved to receive the work,and slotted at right-angles to said groove to receive the aws of thepunch, arms pivotally connected with said plate, and provided withwork-gripping members, and means to rock said arms on their pivots andactuate said gripping members into and out of engagement with the work.

A guide, for a punch, comprising a plate transversely grooved in theback side to receive the work, longitudinally slotted to rcceive thejaws of the punch and also to receive arms, and provided with lugs, armspivotally connected with said lugs and extending through one of theslots in said plate, said arms being provided at their car terminalswith gripping posts, and one said arms being bifurcated at its forwardrminal, a screw tapped into the other of aid arms and having a partwhich extends hrough said bifurcated terminal, and proecting members onsaid screw on opposite sides oi said terminal.

The combination, in a punch and guide therefor, both being separable andindependent, but adapted to cooperate with each other, with a guidecomprising a plate having a slot therethrough, and having workrcceivingparts on opposite sides of said slot, and provided with gripping andreleasing means for the work, oi a punch provided with a punch pin, andhaving jaws which are receivable at their forward terminals in saidslot, and adapted to project through and beyond the same, so that, saidand pin can engage that part of the work which extends across the slot.

The combination, in a punch and guide therefor, with a guide comprisinga plate having slots therein, and having work receiving parts onopposite sides of said slots, and provided with gripping and releasingmeans for the work, which means extend into one or" said slots, of apunch having jaws which are adapted to have their forward ends insertedin the other of said slots, wherein said ends are guided by the sidesthereof, and provided with a punch pin, the punch being insertable inand removable from the guide at will.

6. In a punch and guide tnercfor, a punch having aws which are providedwith a punching member, and a guide having workreceiving parts, andprovided with gripping and releasing means for the work, and also havingpositioning means for said jaws, whereby holes which are separated by apredetermined distance may be punched in the work by said punchingmember.

7. In a punch and guide therefor, a punch having jaws which are providedwith a punching member, and further provided with means to determine thedistance in from the front edge of the work of the holes punched by saidpunching member, and a guide having work-receiving parts, and pro videdwith gripping and releasing means for the work, and also havingpositioning means for said jaws, whereby holes which are separated by apredetermined distance may be punched in the work by said punchingmember.

8. The combination, in a punch and guide therefor, with a guideattachable to the work and adapted to position the jaws of a punch, of apunch comprising a head, a screwthreaded spindle rotatably connectedwith said head, a sleeve in threaded engagement with said spindle, armshaving jaws formed thereon, and pivotally connected with said head,links pivotally connecting said arms with said sleeve, a punch pinprojecting from the inner face of one of said jaws, the other of saidjaws being recessed to accommodate the free end of said pin when saidjaws are closed, and a stop secured to theinner face of said last-namedjaw, and adapted to limit the closing of, the jaws.

9. The combination, in a punch and guide therefor, with a guideattachable to the work, of a punch comprising a head, a screw-threadedspindle rotatably connected with said head, a sleeve in threadedengagement with said spindle, arms having jaws formed thereon, andpivotally connected with said head, said guide being adaptedto positionsaid jaws, links pivotally connecting said arms with said sleeve, apunch pin projecting from the inner face of one of said jaws, the otherof said jaws being recessed to accomodate the free end of said pinwhensaid jaws are closed, and a stop secured to the inner face of saidlast-named jaw, and adapted to bear against the front edge of the workand thus determine the position in from such edge of the hole punched bysaid P 10. The combination, in a punch and guide therefor, with a guideattachable to the work and adapted to position the jaws of a punch, of apunch comprising a head,

a screw-threaded spindle rotatably connected with said head, a sleeve,in threaded en-' gagement with said spindle, arms having jaws formedthereon, and pivotally connected with said head, links pivotallyconnecting said arms with said sleeve, a punch pin projecting fromtheinner face of one of said jaws, the other of said jaws being recessed toaccommodate the free end of said pin when said jaws are closed, and astop secured to the inner face of said last-named jaw, said stop havinga projecting part to bear against the work when said pin is withdrawntherefrom. g

11. The combination, in a punch and guide therefor, with a guideattachable to the work and adapted to position the jaws of a punch, of apunchcomprising a head,

a screw-threaded spindle rotatably connected with said head, a sleeve inthreaded engagement with said spindle, farms having jaws provided withpunching members, said arms being pivotally connected with said head,and one of said arms being provided with a handle, links pivotallyconnecting said arms with said sleeve, and a hand-wheel on the spindle.

12. The combination, in a punch and guide therefor, with a guideattachable to the work and adapted to position the jaws of a punch, of apunch comprising a head, a

screw-threaded spindle rotatably connected with said head, a sleeve inthreaded engagement with said spindle, arms having jaws and providedwith punching members, said arms being pivotally connected with saidhead, and one of said arms being provided with 'a handle, a stopattached to one of said jaws, links pivotally connecting said arms withsaid sleeve, and a hand-wheel on the spindle.

c AZEL C. HOUGH.

